Jealousy - that gnawing feeling deep inside when you see the person you love flirting with someone else.

Or you overhear a late-night phone call from an ex. Maybe you suspect your partner is cheating. Or maybe you’re just the jealous type. Too much jealousy can wreck a relationship. So read about what's normal and what's not in our Top Five Facts #22. 

“My girlfriend is stalking me!” says Anupam.

Facebook had been the cause of multiple fights between him and his girlfriend in the past as well, but according to him they were a bit silly – like her complaining he hadn’t updated his relationship status after they started seeing each other. “But lately I get the feeling that she’s been stalking me on Facebook,” he says.

It’s not ‘just lunch’! Meeting up to chow down with an ex will probably make your current partner wild with jealousy.

There’s something about sharing food with a former love interest that’s threatening, a recent US study found. Your partner might be OK with it if you chat to an old flame. But as soon as there’s food involved, the alarm bells start to ring.

Just like the mangoes every summer, relationships come in different shapes, sizes, colours and flavours.

There's a whole spectrum of commitment, and open relationships are becoming more and more acceptable. “I travel quite a lot and stay away from my girlfriend – for months together sometimes. That’s why we are in an open relationship,” a friend of mine said.

Q: I’m very jealous of my boyfriend’s best girl friend. I’m not sure if they’re ‘just friends’.

He hugs and kisses her more than he would do me. I've been with him about 10 months now. I love him so much. I always knew he had a lot of female friends. I didn’t think I’d get possessive, but now I am. What should I do? Seerat, Jaipur

It all started with a friend of mine lying to her boyfriend about her tea breaks with her “harmless” male colleague.

I’ve been a pathetic liar throughout. Even as a child, I’d lie only to be caught easily. So eventually, I gave up on it and embraced good old honesty as my best policy. But recently, my friend convinced me that learning how to lie could be beneficial.

“Wanted: Men who believe wives are not for battering.” This advert in a leading Indian newspaper led to the formation of Men Against Violence and Abuse.

More than 200 men responded to the ad, placed by an activist journalist. Out of the 30 who went to the first meeting in Mumbai in 1993, seven came together to form MAVA.

You're not alone. One in three women and one in seven men admit to hacking into their partner's e-mail account to keep tabs on them.

Checking call histories and following Facebook accounts are the most common ways people spy on their lovers, a recent US study found.

Half of all male and female college students admit using technology to snoop, or report being the victim of partners who do.

Indian men are the biggest ‘machos’, in everything from sex to housework.

Eighty-six percent of them think jobs like changing diapers are strictly for women. More worryingly, nearly a quarter confess to committing sexual violence, like forcing a partner to have sex. The findings come in a six-nation study by the International Centre for Research on Women.